\begin{table}[htbp]\centering
\caption{Robust IV Estimates of Log Registration on  \label{tab:GasUseivShort}}
\begin{tabular}{l*{2}{c}}
\hline \hline \multicolumn{5}{l}{\textit{Panel A: IV Estimates and Robust 95\% Confidence Intervals}} \\&            &            \\
\multicolumn{5}{c}{Dep. Var.: Log Number of Vehicle Registrations} \\ &         (1)&         (2)\\
$\beta$     &      -0.290&       -0.28\\
95\% Conf. Set&[-0.77, 0.10]&[-0.75, 0.10]\\
\makecell[l]{Data Source \nextline Controls}&        None&  Documented\\
State Fixed Effects&           Y&           Y\\
Year Fixed Effects&           Y&           Y\\
\makecell[l]{State-Specific Linear \\ Time Trends}&           Y&           Y\\
Common Controls&           Y&           Y\\
Number of Obs.&       2,429&       2,429\\
\hline \hline \multicolumn{5}{l}{\textit{Panel B: Anderson-Robin Test Statistics and P-Values}} \\&            &            \\
\multicolumn{5}{c}{\underline{$ H_{0}:\beta=1.6$}} \\ AR Stat&           .&           .\\
p-value     &           .&           .\\
            &            &            \\
\multicolumn{5}{c}{\underline{$ H_{0}:\beta=1$}} \\ AR Stat&           .&           .\\
p-value     &           .&           .\\
            &            &            \\
\multicolumn{5}{c}{\underline{$ H_{0}:\beta=0.3$}} \\ AR Stat&           .&           .\\
p-value     &           .&           .\\
            &            &            \\
\multicolumn{5}{c}{\underline{$ H_{0}:\beta=0$}} \\ AR Stat&           .&           .\\
p-value     &           .&           .\\
            &            &            \\
\multicolumn{5}{c}{\underline{$ H_{0}:\beta=-2.5$}} \\ AR Stat&           .&           .\\
p-value     &           .&           .\\

